Table of Contents

• Notes

  • Memory
  • 
    

• Assignments

  • Poster Plan
  • Poster
  • Build my computer
  • Components of a computer system worksheet
  • 
    

• [Components of a computer system#homework|Homework]]

  • My Real Computer
  • 
    

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Notes

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Memory

Memory is measured in bytes.
1 byte = 1 letter in MS word
1 Kilobyte (Kb) = 1000 bytes
1 Megabyte (Mb) = 1000 Kb
1 Gigabyte (Gb) = 1000 Mb
1 terabyte (Tb) = 1000 Gb

ROM (Read Only Memory)
When a computer is made basic operating instructions are put on a ROM chip. These control how the computer turns on. They can be read but not changed and are available even after the computer is turned off.

RAM (Random Access Memory)
The RAM chip inside the computer holds its operating instructions and allows programs to work e.g. MS Word. The more RAM a computer has, the faster the programs can be used. PCs today come with 512 Mb or 1Gb of RAM. When you work with big files e.g. editing pictures or films you need a lot of RAM. All data held in RAM is lost when the computer is turned off.

Storing data internally
Data is stored on the hard drive. Hard drives can be 1-1000Gb large.

Assignments

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Poster Plan

Poster

Build my computer

Processor	Intel® Core™i7-960 processor(8MB L2 Cache, 3.20GHz)
Operating System	Genuine Windows® 7 Home Premium, 64Bit, English
Memory3	12GB3 Tri-Channel DDR3 SDRAM at 1333MHz
Hard Drive	2000GB4 SATA hard drive (7200RPM)
Video Card	AMD Radeon™ HD 6670 1GB DDR5
Monitor	No Monitor
Warranty	1 Year In-Home Service after Remote Diagnosis - No Software Support

Market Value1 $1898.99
Dell Price $1299.99
Total Savings $599.00

Components of a computer system worksheet

1. What is hardware and give two examples? (p8)

Hardware is physical parts of a computer. Monitor, Keyboard.

1. What is software and give two examples? (p8)

Software is computer programs that tell the hardware how to work. Windows 7, Windows XP

1. List the 5 categories of hardware.

CPU, Memory, Storage devices,Input devices, output devices.

1. What is the main purpose of
   1. An operating system – give an example Windows Vista
   2. Application software – give an example(p9) Microsoft Word

1. What does CPU stand for?

Central processing unit

1. What is the function of a CPU and what is the most common brand of processor?

The CPU is the brain of the computer and controls how the rest of the computer works. Intel

1. What is the main piece hardware used to store data internally?

HDD

1. What does ROM do?

ROM stands for read only memory, it contents file which can only be read.

ROM provides the data necessary to …

1. If data is held in RAM, why is it important to save your work?

It can disappear or it will be gone if you wont save it in hdd

1. Write a brief definition of input and output devices and give one example of each.

Input device – anything that can get data into a computer.



Output device – to get processed information out of a computer, an output device, such as printer or computer screen, is needed.

1. To back up data means to store data in another place than the hard drive so that you have an emergency copy of your data. Give three examples of devices used for secondary/ backing storage.

1.Floppy Disk
2.HDD
3.Tape Drives

1. Windows has a ‘Graphical User Interface’ (GUI), what is a GUI? and explain the difference between a GUI and a command line interface.

Homework

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My Real Computer